Current File : //lib/python2.7/site-packages/pip/_vendor/progress/__init__.py
# Copyright (c) 2012 Giorgos Verigakis <verigak@gmail.com>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
from __future__ import division
from collections import deque
from datetime import timedelta
from math import ceil
from sys import stderr
from time import time
__version__ = '1.2'
class Infinite(object):
file = stderr
sma_window = 10
def __init__(self, *args, **kwargs):
self.index = 0
self.start_ts = time()
self._ts = self.start_ts
self._dt = deque(maxlen=self.sma_window)
for key, val in kwargs.items():
setattr(self, key, val)
def __getitem__(self, key):
if key.startswith('_'):
return None
return getattr(self, key, None)
@property
def avg(self):
return sum(self._dt) / len(self._dt) if self._dt else 0
@property
def elapsed(self):
return int(time() - self.start_ts)
@property
def elapsed_td(self):
return timedelta(seconds=self.elapsed)
def update(self):
pass
def start(self):
pass
def finish(self):
pass
def next(self, n=1):
if n > 0:
now = time()
dt = (now - self._ts) / n
self._dt.append(dt)
self._ts = now
self.index = self.index + n
self.update()
def iter(self, it):
for x in it:
yield x
self.next()
self.finish()
class Progress(Infinite):
def __init__(self, *args, **kwargs):
super(Progress, self).__init__(*args, **kwargs)
self.max = kwargs.get('max', 100)
@property
def eta(self):
return int(ceil(self.avg * self.remaining))
@property
def eta_td(self):
return timedelta(seconds=self.eta)
@property
def percent(self):
return self.progress * 100
@property
def progress(self):
return min(1, self.index / self.max)
@property
def remaining(self):
return max(self.max - self.index, 0)
def start(self):
self.update()
def goto(self, index):
incr = index - self.index
self.next(incr)
def iter(self, it):
try:
self.max = len(it)
except TypeError:
pass
for x in it:
yield x
self.next()
self.finish()
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